The OPERA experiment is designed to search for nu(mu) -> nu(tau) oscillations in appearance mode, i.e., through the direct observation of the tau lepton in nu(tau)- charged current interactions. The experiment has taken data for five years, since 2008, with the CERN Neutrino to Gran Sasso beam. Previously, two nu(tau) candidates with a t decaying into hadrons were observed in a subsample of data of the 2008-2011 runs. Here we report the observation of a third nu(tau) candidate in the tau(-) -> mu(-) decay channel coming from the analysis of a subsample of the 2012 run. Taking into account the estimated background, the absence of nu(mu) -> nu(tau) oscillations is excluded at the 3.4 sigma level.
Titolo: | Evidence for nu(mu) -> nu(tau) appearance in the CNGS neutrino beam with the OPERA experiment |
Autore/i: | N. Agafonova; A. Aleksandrov; A. Anokhina; S. Aoki; A. Ariga; T. Ariga; T. Asada; D. Autiero; A. B. Dhahbi; A. Badertscher; D. Bender; A. Bertolin; C. Bozza; R. Brugnera; F. Brunet; G. Brunetti; A. Buonaura; S. Buontempo; B. Buettner; L. Chaussard; M. Chernyavsky; V. Chiarella; A. Chukanov; L. Consiglio; N. D'Ambrosio; G. D. Lellis; M. D. Serio; P. D. Amo; A. D. Crescenzo; D. D. Ferdinando; N. D. Marco; S. Dmitrievski; M. Dracos; D. Duchesneau; S. Dusini; T. Dzhatdoev; J. Ebert; A. Ereditato; J. Favier; T. Ferber; G. Ferone; R. A. Fini; T. Fukuda; G. Galati; A. Garfagnini; G. Giacomelli; C. Goellnitz; J. Goldberg; Y. Gornushkin; G. Grella; F. Grianti; M. Guler; C. Gustavino; C. Hagner; K. Hakamata; T. Hara; T. Hayakawa; M. Hierholzer; A. Hollnagel; B. Hosseini; H. Ishida; K. Ishiguro; M. Ishikawa; K. Jakovcic; C. Jollet; C. Kamiscioglu; M. Kamiscioglu; T. Katsuragawa; J. Kawada; H. Kawahara; J. H. Kim; S. H. Kim; M. Kimura; N. Kitagawa; B. Klicek; K. Kodama; M. Komatsu; U. Kose; I. Kreslo; A. Lauria; J. Lenkeit; A. Ljubicic; A. Longhin; P. Loverre; A. Malgin; G. Mandrioli; J. Marteau; T. Matsuo; V. Matveev; MAURI, NICOLETTA; MEDINACELI VILLEGAS, EDUARDO; A. Meregaglia; P. Migliozzi; S. Mikado; M. Miyanishi; E. Miyashita; P. Monacelli; M. C. Montesi; K. Morishima; M. T. Muciaccia; N. Naganawa; T. Naka; M. Nakamura; T. Nakano; Y. Nakatsuka; K. Niwa; S. Ogawa; N. Okateva; A. Olshevsky; T. Omura; K. Ozaki; A. Paoloni; B. D. Park; I. G. Park; A. Pastore; L. Patrizii; E. Pennacchio; H. Pessard; C. Pistillo; D. Podgrudkov; N. Polukhina; POZZATO, MICHELE; K. Pretzl; F. Pupilli; R. Rescigno; M. Roda; H. Rokujo; T. Roganova; G. Rosa; I. Rostovtseva; A. Rubbia; O. Ryazhskaya; O. Sato; Y. Sato; A. Schembri; W. Schmidt Parzefal; I. Shakiryanova; T. Shchedrina; A. Sheshukov; H. Shibuya; T. Shiraishi; G. Shoziyoev; S. Simone; SIOLI, MAXIMILIANO; C. Sirignano; SIRRI, GABRIELE; M. Spinetti; L. Stanco; N. Starkov; S. M. Stellacci; M. Stipcevic; T. Strauss; P. Strolin; K. Suzuki; S. Takahashi; TENTI, MATTEO; F. Terranova; V. Tioukov; S. Tufanli; P. Vilain; M. Vladimirov; L. Votano; J. L. Vuilleumier; G. Wilquet; B. Wonsak; C. S. Yoon; J. Yoshida; M. Yoshimoto; Y. Zaitsev; S. Zemskova; A. Zghiche |
Autore/i Unibo: | |
Anno: | 2014 |
Rivista: | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevD.89.051102 |
Abstract: | The OPERA experiment is designed to search for nu(mu) -> nu(tau) oscillations in appearance mode, i.e., through the direct observation of the tau lepton in nu(tau)- charged current interactions. The experiment has taken data for five years, since 2008, with the CERN Neutrino to Gran Sasso beam. Previously, two nu(tau) candidates with a t decaying into hadrons were observed in a subsample of data of the 2008-2011 runs. Here we report the observation of a third nu(tau) candidate in the tau(-) -> mu(-) decay channel coming from the analysis of a subsample of the 2012 run. Taking into account the estimated background, the absence of nu(mu) -> nu(tau) oscillations is excluded at the 3.4 sigma level. |
Data prodotto definitivo in UGOV: | 2014-11-11 23:41:56 |
Data stato definitivo: | 2016-01-14T23:00:31Z |
Appare nelle tipologie: | 1.01 Articolo in rivista |